Prothena Corp Public (PRTA) Shares Outstanding (Diluted Average) (2013 - 2026)

Prothena Corp Public's Shares Outstanding (Diluted Average) history runs 11 years deep, the most recent figure standing at $54.1 million for Q1 2026.

• In Q1 2026, Shares Outstanding (Diluted Average) rose 0.52% year-over-year to $54.1 million; the TTM figure through Mar 2026 stood at $54.1 million (up 0.52% YoY), while the FY2025 annual figure was $53.8 million, changed 0.11% from the prior year.
• Shares Outstanding (Diluted Average) was $54.1 million for Q1 2026 at Prothena Corp Public, up from $53.8 million in the prior quarter.
• In the past five years, Shares Outstanding (Diluted Average) ranged from a high of $55.0 million in Q2 2024 to a low of $46.7 million in Q1 2022.
• Historically, Shares Outstanding (Diluted Average) has averaged $52.1 million across 5 years, with a median of $53.7 million in 2024.
• Biggest YoY gain for Shares Outstanding (Diluted Average) was 16.03% in 2022; the steepest drop was 2.26% in 2022.
• A 5-year view of Shares Outstanding (Diluted Average) shows it stood at $47.4 million in 2022, then rose by 12.34% to $53.2 million in 2023, then gained by 1.04% to $53.8 million in 2024, then grew by 0.11% to $53.8 million in 2025, then increased by 0.52% to $54.1 million in 2026.
• The last three Shares Outstanding (Diluted Average) figures came in at $54.1 million (Q1 2026), $53.8 million (Q4 2025), and $53.8 million (Q3 2025), per Business Quant data.